Motor for mechanical musical instruments



(No Model.) 2 SheetsSheet 1. G. B. KELLY.

MOTOR FCR MECHANICAL MUSICAL INSTRUMENTS- NC. 357,933. 'Patented Peb. 15, 1887.

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(No Model.)

l G. B. KELLY. MOTOR FOR MECHANICAL MUSICAL INSTRUMENTS No. 357.933.V

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M K A 0 UNITED STATES PATENT OEEICE..`

GEORGE B. KELLY, OF BOSTON, MASSACHUSETTS.

MOTOR FOR MECHANICAL MUSICAL INSTRUMENTS.

SPECIFICATION forming part of Letters Patent No. 357,933, dated February 15, 1887.

Application tiled January 10, 1887.

To all whom it may concern:

Be it known that l, GEORGE B. KELLY, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Motors for Mechanical Musical Instruments, of which the following is a full, clear, and exact description.

This invention relates to improvements in motors more especially intended for use in mechanical musical instruments, and to the motor described and shown, for instance, in a pending application of mine for Letters Patent of the United States, Serial No. 194,790; and the invention consists of novel means for connecting the chambered block or valve which makes and breaks air-communication between the wind-chest or operating-bellows and one or more bellows or collapsible and exhaustible chamber or chambers connected to the revolving shaft to said bellows or collapsible chamber for the operation of said block or valve, all substantially as hereinafter fully described, reference being had to the accompanying sheets of drawings, in whichi Figure 1 is an end elevation. Fig. 2 is a plan view. Fig. 3 is a vertical cross-section on line 3 3, Fig. 2. Fig. Ll is a vertical crosssection on line 3 3, Fig. 2, but with the valve in a different position from Fig. 3. Fig. 5 is a vertical crosssection on line 5, Fig. 2; Figs. 6 and 7, detail vertical sections, to be hereinafter referred to.

In the drawings, A B represent two upright bellows or collapsible and expanding chambers, secured by their back-boards C to the sides of a board or block, D, opposite to each other, these bellows being constructed and arranged for operation as usual in bellows for musical instruments, and needing no particular description herein.

The two movable boards E and F, respectively, of the bellows A B are connected together at their top edges by a rod, G, pivoted thereto at c, respectively, which rod is of such a length between its two pivots a that when the bellows A is closed the bellows B will be opened, and vice versa, and at intermediate points correspondingly.

H is a pitman or rod, pivoted at b by one end to the bellows-board F, and by its other end to a crank-arm, J, of ahorizontal shaft, K, se-

Serial No. 223,919. (No model.)

opening into and communicating with the 4 chamber of the bellows B, as at g. (See Fig. 5.)

N is a horizontal passage in the block D between the chambers L M, and opening to the outside of the block D at h, and at its other end it communicates with an air-chamber or the windchest of the musical instrument having communication with a suitable main operating-bellows, or the passage can communicate with such bellows directly, all in any suitable manner.

Z m are openings, one, Z, above the other, m, in the end of the block D, forming communication from the outside with the chamber L, and up are similar openings making communication with the chamber M.

Q is a dat block or board or valve arranged to slide up and down on the block D in guideways q r over the openings Z m and a p. This block or valve Q is connected by a rod, R, to the pitman H oi' the arm J, being pivoted to said pitman H at t, and having a screw-thread on its lower end, which screws into a block, S, pivoted at u to and on the valve Q, for it to swing thereon.

T is a iiat spring secured at its middle portion, fu, to the edge w of the valve, its free ends a: bearing against the guide-bar q, whereby the valve Q is held closely in place, and yet can move freely up and down in said guideways.

Then the two bellows A B are operated, causing the shaft and its crank-armJ to turn, the counecting-pitman H moves up and down, swinging on its pivot b, which, through its connection by its rod It with the block or valve Q, moves it up and down in its guideways, the block S swinging on its pivot u, to allow for the necessary movement and play of the rod R. The valve has two openings, a b', through it, which are of such a distance apart and in such relation to the openingsm a to the charnbers L M that when the valve is in position IOO for the one c to be over or opposite the opening m to the chamber L, the other, b', will be below the opening a to the chamber M, as shown in section in Fig. 6, and when the one b is over the opening n, the other, c', will be above the opening m, as shown in section in Fig. 7; and the valve is of such a length that when in the position shown in Fig. 6 its upper end, d', will be just below the opening Zto the chamber L, and the lower end,f, will be below the opening p, and when the valve isin the position shown in Fig. 7 the lower end, f, will be above the openingp and its upper end, d, above the opening Z, so that as the block or valve is moved up and down the openings Z m and n p will be alternately opened and closed by it-that is, when the valve is at its lowest point the openings Z m will be opened or uncovered and the openings a p closed or covered by the valve, and when the valve is at its highest point the openings Z m will be closed or covered and the openings .up opened or uncovered, as shown in detail section in Figs. 6 and 7, respectively.

The valve Q has on its inner side a chamber, U, between the openings a and b', which is arranged to be over and opposite the end 7L of the passage N, and isof a length and width to be always over the passage N in all positions lof the valve when being operated, and when the valve is in its lowest position to be also over and in communication with the opening a to chamber M, and not in communication with the opening m to chamber L, and in its highest position to be over and in communication with the opening m to chamber L, and not with the opening a to chamber M, maintaining constantly, however, communication with the passage N, the movements of the valve alternately bringing the chamber over and in communication with the openings m n to the chamber L M.

In Fig. Sin cross-section the valveis shown in a position to partially open the openings Z m to the outside through its openings ce and upper end, d', of the valve, with its chamber U in communication with the *opening a and closed to the opening m, and in Fig. 4 the reverse with the same openings.

The operation is substantially as follows: The main bellows of the instrument being operated, which in the present arrangement of the parts should be an exhaust one, air is exhausted from the chamber into which the passage N opens, and through the passage N and the valve-chamber U from whichever chamber, L or M, is open to or in communication with its respective bellows by the valve Q, being in proper position therefor, closing such bellows, which by itsv rod G connection with the other bellows opens it, which movements, continued alternately, turn theshaft and crankarm J, which in turning raises and lowers its end of the pitman H, connected by the rod G to the valve Q, and thus raises and lowers the valve, breaking communication with whichever bellows it is in communication with by its chamber and making communication by its chamber with the other bellows, and closing the openings to the first bellows and opening the openings to the other bellows, and so on alternately, so long as the main bellows is operated, the two bellows A B thus constantly and alternately opening and closing, whereby the shaft K will be continuously rotated.

The openings Z m and n p, respectively, tol the chambers L M are preferably made oblong, as shown, as well as the corresponding openings, a b', in the valve, and each chamber L M has preferably two of such openings, as shown, although one might answer; but the two cause the bellows to operate more quickly, as with the same movement of the valve with two openings a larger opening area is obtained at the earliest moment, insuring quick responses of the two bellows, as the valve alternately makes and breaks communication between them and the passage N by its chamber U.

If desirous, the shaft K can be of a length to be connected by another crank-arm, arranged,preferably, at a quarter-angle to its arm J, to another set of bellows and valve constructed and arranged for operation in the same manner as the bellows A B and valve Q; or, if desired, only one or three or more bellows can be used; but two bellows at least, arranged for operation as described, work well and satisfactorily.

The openings Zm and n p also serve as eX- haust-openings for their respective bellows in communication therewith in the closing movements of the bellows. The chambered block or valve Q can be connected to the pitman H directly, if desired, with the rod R, although the connection shown works satisfactorily.

Although this invention is particularly described for use in connection with a mechanical musical instrument, obviously it is applicable for other purpose where it is desired to turn a shaft or operate machinery.

Having thus described my invention, what I claim is- 1. The combination, with a wind-chest and one or more bellows and a revolving shaft, of a chambered block arranged to move back and forth and make and break air-communication between said wind-chest and each bellows, and connected to the pitman connecting one of said bellows to said shaft,for the operation of said block.

2. The combination, with a wind-chest and one or more bellows and a revolving shaft, of a chambered block arranged to move back and forth and make and break air-communication between said wind-chest and each bellows, and connected -by a rod,'R, to the pitman connecting one ofsaid bellows to said shaft, for the operation of said block.

3. The combination, with a wind-chest and one or more bellows and a revolving shaft, of a ehambered block arranged to move back and forth and make and break air-communica- ICO tion between said wind-chest and each bellows, alternately open and close said openings, for and provided with a swiveling block, S, and the purpose specified,

a rod, R, connecting it to the pitman H, con- In testimony whereof I have hereunto set neoting one of said bellows to said shaft, for my hand in the presence of two subscribing 5 the operation of said block. witnesses.

4. The oombination,with a chamber, L, having communication with a bellows 01' collapsible chamber and having two openings, Z m, Witnesses: of a block or valve arranged to move back EDWIN W. BROWN, 1o and forth over said openings and constructed to PERCY BRYANT.

eno. B. KELLY.' 

